# Sirius Trader vs Sphere Whiteboard

The clearest difference is iOS requirement: Sirius Trader at 12.4 against Sphere Whiteboard's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sirius Trader ships an update monthly, Sphere Whiteboard fortnightly. The most recent releases landed on October 3, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sirius Trader | Sphere Whiteboard |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Size | 15 MB | 42 MB |
| Requires iOS | **12.4** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NANOVANTAGE (PTY) LTD](https://appshunter.io/developer/1650757214) | [Sphere Innovations](https://appshunter.io/developer/1568741546) |

## What reviewers say

### Sirius Trader

[App page](https://appshunter.io/ios/app/sirius-trader/id6443937682)

**In-app purchases:** none


### Sphere Whiteboard

[App page](https://appshunter.io/ios/app/sphere-whiteboard/id6743793852)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sirius Trader free?

Sirius Trader is free to download, with no in-app purchases.

### Is Sphere Whiteboard free?

Sphere Whiteboard is free to download, with no in-app purchases.

### Do Sirius Trader or Sphere Whiteboard have ads?

Neither Sirius Trader nor Sphere Whiteboard shows ads.

### Which is updated more often, Sirius Trader or Sphere Whiteboard?

Sirius Trader ships an update monthly, and Sphere Whiteboard fortnightly. Most recently, Sirius Trader was updated on October 3, 2026 and Sphere Whiteboard on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*